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Finding the Fourth Proportional to 21,671.74, 32,507.31 and 6,880.43

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Solution

The fourth proportional to 21,671.74, 32,507.31 and 6,880.43 is: 10,320.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.74 : 32,507.31 = 6,880.43 : x
  2. Step 2: Convert to fraction form
    21,671.74/32,507.31 = 6,880.43/x
  3. Step 3: Cross multiply
    21,671.74x = 32,507.31 × 6,880.43
  4. Step 4: Simplify right side
    21,671.74x = 223,664,236.54
  5. Step 5: Solve for x
    x = 223,664,236.54/21,671.74
  6. Step 6: Final answer
    x = 10,320.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.